is the nickname
given by DXers
to a mysterious number station
that first surfaced on December 19, 2004. It transmits on several shortwave
frequencies in dual side band
: 3700 kHz, 4300 kHz, 6500 kHz, and 10500 kHz. The nickname is taken from the Looney Tunes
character Yosemite Sam
, whose voice is played as part of the unusual transmission.
The transmission series
The transmission begins on one of the frequencies. Ten seconds later, it is repeated on the next higher frequency, and so on for a total of two minutes. The entire pattern takes precisely two minutes, and always begins seven seconds after the top of an hour.
Each transmission starts with a data burst
lasting 0.8 seconds, followed by the voice of Yosemite Sam exclaiming: "Varmint, I'm a-gonna b-b-b-bloooow yah t'smithereens!"
The clip is taken from the 1949 cartoon Bunker Hill Bunny
The station disappeared on December 23, 2004, but returned during February 2005
, on its old frequencies plus additional new frequencies, including those of time signals
The purpose and origin of the Yosemite Sam station remain unknown.
Reception reports seem to indicate that the transmitter site is likely in the desert near Albuquerque, New Mexico
, United States
. The Albuquerque location suggests another relation to Looney Tunes: the phrase frequently repeated by Bugs Bunny
, "I knew I should have taken that left turn at Albuquerque."